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The first footage from Christopher Nolan’s forthcoming war drama Dunkirk has been released. The minute-long "announcement" teaser is due to debut in cinemas with Suicide Squad and has now appeared online after an earlier leak.

Both movies are being distributed by Warner Bros., and it feels fitting that the trailer for a film by Nolan – whose Batman trilogy is widely seen as one of the best DC superhero adaptations of recent years – would precede the studio's latest comic-book adventure.

In tone, however, the two films couldn't be more different. Dunkirk, which stars Tom Hardy, Mark Rylance, Cillian Murphy and Kenneth Branagh, tells the story of the Miracle of Dunkirk, in which a fleet of British ships and boats – many of them manned by volunteers – rescued stranded Allied troops from a French beach.

The Dunkirk set in Northern France, pictured earlier this yearCredit:
Michel Spingler

Nolan reportedly went to great lengths to make his first war movie as authentic as possible. As short as it is, this teaser - with its wide shots of raging seas and terrified troops - indicates his efforts have paid off.